Can a stroller jacket be made/worn with matching pants, so that it could also be worn as a suit?

If you're having it made then I don't see why it couldn't be made with matching trousers, the result would just be a black suit wouldn't it?

Now, why you'd want to do so is another matter entirely...

Exactly. If the coat and trousers match, it's just a lounge suit, the only twist being that the coat is one button with "peaked" lapels. Therefore I'd say it's perfectly acceptable, although I wouldn't do it in black. Grey/charcoal would loook good.

There's also the morning suit, in which the morning coat and trousers match, typically in grey, as worn by Prince Charles.

So the difference between a Stroller and a Tailcoat is just the swollow tail back on the tailcoat . The rest of the outfit is the same for both the Stroller and the Morning suit- vest, stripe trouser, etc, is that correct ?

So the difference between a Stroller and a Tailcoat is just the swollow tail back on the tailcoat . The rest of the outfit is the same for both the Stroller and the Morning suit- vest, stripe trouser, etc, is that correct ?

Basically. Stroller and morning coat have different cuts, besides the tail/no tail distinction. The original purpose of the stroller was for comfort in the office. It was meant so that when Stressemann needed to go on official business, he would take off his stroller and put on the morning coat. So in theory, the rest of the outfit should be the same.

Strollers are practically extinct today. I couldn't think of a single occassion where it is suggested, let alone required. Technically it is the day counterpart to the tuxedo, but in this day people just wear a regular old lounge suit.